Apple has released the Thunderbolt Display Firmware Update 1.1 via their Software Update Utility and website for direct download. According to the company, this update addresses a fan noise issue affecting a small number of Apple Thunderbolt Displays and improves stability. The Thunderbolt Display Firmware Update 1.1 weighs in at 942KB and requires either Mac OS X 10.6.8 Snow Leopard or 10.7.2 Lion.

You can hear the fan running in a really quiet room. It also seems to push out a fair amount of heat from the bottom of the display. I noticed this while at a friends house. I mean, it's not loud but it is noticeable from time to time. The thing actually looks pretty big too. At least from the pictures I have seen.

I would gladly trade a little fan noise for the electrical type of whining and hissing coming out of my 24" Dell display. Sometimes I want to just grab the thing and throw it up against a wall. It's so annoying!